BLM upset because cop didn't let crazy man stab him

[Adam Griffin]

If this was the only time BLM cops did something like this you'd have a point.  But it happens a lot.  The argument that "it's a big organization with sh**tty or nonexistent leadership with a bunch of random loud moths viligantes regularly embarrassing them but the general purpose and overall goals of the group is a net good for society" is a much better angle than the one you seem to be taking.